Taxable Equivalent Yield Calculator

Compare a tax-free yield with a taxable investment by entering your tax-free rate and marginal tax rate. This page also keeps the formula, examples, FAQs, and references close by so you can check the result with confidence.

What This Taxable Equivalent Yield Calculator Helps You Do

Taxable equivalent yield is the tax-free yield divided by one minus your tax rate. Review the formula and examples below if you want to see how the result is derived.

This page is meant to give you a fast answer, but it also helps you double-check the math before you make a decision. Start with the inputs that you already know, run the calculation, and then compare the output with the formula, examples, and FAQs below so you can see whether the answer fits the situation you are modeling.

If the result looks off, the usual causes are a unit mismatch, a missing decimal, the wrong scenario, or a value that needs to be entered as a rate instead of a total. The notes on this page are designed to make those checks easy without forcing you to leave the calculator and search for context elsewhere.

  • Use the calculator first for a quick estimate.
  • Use the formula to understand how the result is built.
  • Use the examples to compare common use cases.
  • Use the references when the answer depends on a standard or assumption.

Common Checks

A quick result is useful, but the best result is one that still makes sense when you look at it a second time. If you are comparing scenarios, try changing one input at a time so you can see which variable has the biggest impact on the final answer. That makes it much easier to spot whether the calculation matches your expectations.

It also helps to keep the context of the problem in mind. A calculator can tell you the math, but you still need to decide whether the input represents a total, a rate, an average, or a category-specific assumption. When in doubt, start with a simple example from the page and scale up from there.

  • Check that every unit matches the rest of the problem.
  • Keep rates, totals, and averages separate.
  • Adjust one variable at a time when testing scenarios.
  • Use the smallest realistic input first, then scale upward.

Scenario Planning

This calculator is especially useful when you want a quick answer before you commit time, money, or effort. Try one baseline input set, then change a single number and compare the result so you can see how sensitive the answer is to that variable.

That makes the page useful for more than just arithmetic. It becomes a small decision aid that helps you compare options, test assumptions, and explain the final number with confidence when you need to share it with someone else.

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Result

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Quick Answer: Taxable equivalent yield is the tax-free yield divided by one minus your tax rate. Review the formula and examples below if you want to see how the result is derived.

How to Calculate Taxable Equivalent Yield Calculator

  1. Enter the tax-free yield: Use the coupon or yield from the tax-free bond or security.
  2. Enter your tax rate: Use your marginal rate for the income you would normally pay tax on.
  3. Compare the result: The output shows the taxable yield that matches the tax-free investment.

Taxable Equivalent Yield Calculator Formula

TEY = tax-free yield / (1 - tax rate)
Variable Meaning Unit
Tax-free yield Bond or security yield that is exempt from tax %
Tax rate Your marginal tax rate %

Worked Examples

USA - Municipal bond
  • Tax-free yield: 4.2%
  • Tax rate: 24%

Result: 5.53%

A taxable bond would need a yield around 5.53% to match the tax-free return.

USA - Higher bracket
  • Tax-free yield: 3.6%
  • Tax rate: 32%

Result: 5.29%

The higher your tax rate, the more valuable the tax-free yield becomes.

USA - Lower bracket
  • Tax-free yield: 5%
  • Tax rate: 12%

Result: 5.68%

Lower tax rates reduce the advantage of tax-free income.

How to Interpret Your Results

Range Meaning Action
Low tax rate Tax-free advantage is modest Compare after-tax returns carefully.
Moderate tax rate Tax-free yields start to matter more Check both taxable and tax-free alternatives.
High tax rate Tax-free yields can be much more valuable Tax-free income may be especially attractive.

Frequently Asked Questions

It is the taxable yield that would produce the same after-tax return as a tax-free investment.

Use it when comparing municipal bonds or other tax-free investments against taxable alternatives.

Yes. The calculator uses the tax rate you enter.
Planning note: This is an educational estimate and does not replace personal financial advice.

References

Last reviewed: April 2026